The house of the Plantagenets, from Henry II to Richard III himself, was brimming with blood. In their lust for power the members of the family turned upon one another. King John murdered, or caused to be murdered, his nephew Arthur; Richard II despatched his uncle, Thomas of Gloucester; Richard II was in turn killed on the orders of his cousin, Henry Bolingbroke; Henry VI was killed in the Tower on the orders of his cousin, Edward IV; Edward IV murdered his brother, Clarence, just as his own two sons were murdered by their uncle. It is hard to imagine a family more steeped in slaughter and revenge, of which the Wars of the Roses were only one effusion. It might be thought that some curse had been laid upon the house of the Plantagenets, except of course that in the world of kings the palm of victory always goes to the most violent and the most ruthless. It could be said that the royal family was the begetter of organized crime.